Well, I don't have the save game you need, but I'll tell you how to get past that point...
When those guys start chasing you, go to them so they chase you. Ben will climb to the top of one car and they'll crash it a couple of times. AS SOON AS THEY FINISH CRASHING, click on their car. Ben will now 'ride' them on the roof.
The car will move slowly through the arena. Just when it gets close to the huge fire of the bottom, click on that fire. Ben will run to it with Nestor and Bolus' car chasing him. And that's it!! Enjoy the cutscene...